CNN's Gary Tuchman searches in Mexico for a fugitive priest facing allegations of child molestation and statutory rape. Cardinal Roger Mahony is accused of bringing Father Nicholas Aguilar Rivera into the Archdiocese of Los Angeles years ago knowing he was an accused serial molester.

Editor's note: Don't miss the premiere of "The Bully Effect" on AC360° at 10 p.m. ET Thursday. Note graphic language in this story.

Brandon Turley didn't have friends in sixth grade. He would often eat alone at lunch, having recently switched to his school without knowing anyone.

While browsing MySpace one day, he saw that someone from school had posted a bulletin - a message visible to multiple people - declaring that Turley was a "fag." Students he had never even spoken with wrote on it, too, saying they agreed.

Feeling confused and upset, Turley wrote in the comments, too, asking why his classmates would say that. The response was even worse: He was told on MySpace that a group of 12 kids wanted to beat him up, that he should stop going to school and die. On his walk from his locker to the school office to report what was happening, students yelled things like "fag" and "fatty."